At its best:
Jun, Jul, Aug
Suspend the basket in a plant pot, to make planting up the sides easier, and add a coir liner, preferably one with holes in the sides. Fill the basket two-thirds with compost, mixed with a couple of handfuls of water-retaining gel and slow-release fertiliser.
Plant up the sides with two each of the geraniums and petunia, gently pushing the rootballs through the holes from the outside to avoid damaging the leaves.
In the centre of the basket, plant the nemesias, and alternate the rest of the geraniums and petunias around the edges. Trim away excess coir lining, to tidy the display.
Water the plants thoroughly, allowing the basket to drain fully before transferring it to its bracket.